Solar panel



FIG. 1 is a top perspective view of a solar panel showing my new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a right side elevation view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is another top perspective view thereof, shown in environmental use.

The broken lines illustrate the environment only that form no part of the claimed design. 

CLAIM The ornamental design for a solar panel, as shown and described. 